On 5/13/07, altern <altern2@gmail.com> wrote:

ah!... now i see ... so [rectangle 1 1] is equivalent to

     glBegin(GL_QUADS)
     glVertex3f(-1.0, 1.0, 0.0)
     glVertex3f(1.0, 1.0, 0.0)
     glVertex3f(1.0, -1.0, 0.0)
     glVertex3f(-1.0 , -1.0, 0.0)
     glEnd()

so the final width and height is actually 2 units ... this is a bit
confusing in the documentation help patch, i mean i know some opengl but
still when i read width height words i thought about the width and
height of a rectangle in normal geometry and not opengl postion of the
vertex location from the current position.

You are correct that the size of the rectangle is the dimensions from the center of the object. Arguments can be made for treating size this way or making the size the actual final dimensions in GL units, but both are valid as long as the use is consistent.